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Egyptian Journal of Radiology and Nuclear Medicine

Table 4 Validity (AUC, sensitivity, specificity) of ASL aCBF and rCBF to assess the expected stroke outcome (favorable or poor mRS)

From: Role of arterial spin labeling magnetic resonance perfusion in acute ischemic stroke

 

AUC

p

95% C.I

Cut off

Sensitivity

Specificity

PPV

NPV

ASL aCBF

0.793

0.004*

0.631–0.955

 ≤ 19#

78.95

71.43

78.9

71.4

ASL rCBF

0.942

 < 0.001*

0.869–1.014

 ≤ 74

84.21

78.57

84.2

78.6

  1. ASL arterial spin labeling, aCBF absolute cerebral blood flow, AUC Area Under a Curve, CI Confidence Intervals, NPV Negative predictive value, p value Probability value, PPV Positive predictive value, rCBF relative cerebral blood flow
  2. *Statistically significant at p ≤ 0.05
  3. #Cut off was choose according to Youden index
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